page-1983-101-timex-sinclair-programming-tricks

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having created him on the graphics screen, how can wekeep him there? By using a freeze frame as we have donehere in line 300.Line 300 is an endless loop, holding action at line 300forever, until you press the break key.Run this program first. Then, go on to Tip Number 83.Program Listing10 CLS20 FOR X=20 TO 3030 PLOT X,3540 NEXT X50 FOR Y=35 TO 25 STEP -160 PLOT 30,Y70 NEXT Y80 FOR X=30 TO 20 STEP -190 PLOT X,25100 NEXT X110 FOR Y=25 TO 35120 PLOT 20,Y130 NEXT y140 PLOT 22,33150 PLOT 28,33160 PLOT 25,30170 FOR X=22 TO 28180 PLOT X,27190 NEXT X200 FOR Y=25 TO 5 STEP -1210 PLOT 25,Y220 NEXT Y230 FOR X=20 TO 30240 PLOT X,5250 NEXT x300 GOTO 30083 Okay, Now WaveThis is a development of the stick man drawn andfrozen on the screen in Tip Number 82. Here, we add pro-104
gram lines to draw and seem to move the stick man's leftarm on the right side of the TV screen. The result is theappearance of arm motion. Very clever, these stick men!Program Listing10 CLS20 FOR X=20 TO 3030 FOR Y=S TO 35 STEP 1040 PLOT XrY50 NEXT Y60 NEXT X70 FOR Y=25 TO 3580 FOR X=20 TO 30 STEP 1090 PLOT XrY100 NEXT X110 NEXT Y120 PLOT 22r33130 PLOT 28r33140 PLOT 25r30150 FOR X=22 TO 28160 PLOT Xr27170 NEXT X180 FOR Y=S TO 25190 PLOT 25rY200 NEXT Y210 FOR X=30 TO 26 STEP -1220 UNPLOT Xrl5230 NEXT X240 PAUSE 60250 FOR X=26 TO 30260 PLOT Xrl5270 NEXT X280 PAUSE 60290 GOTO 21084 Create A TableThis program generates a table of values, as a105
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IMEX/ SJ,NCLAIRODO zx-B'IRDGRAMMING
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FIRST EDITIONFIRST PRINTING©1983 b
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TipTable of ContentsPageIntroductio
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Gee Whiz37 Gee Whiz I: Smart Adder
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97 Draw A Line98 Box Message99 Boxe
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The 101 programs in this handbook c
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author's training in writing BASIC-
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Fun & Games
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Program Listing10 RAND100 LET A=INT
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140 IF R
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130 PRINT •BACKWARD:•140 FOR J=
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110 PRINT •PRESS ANY KEY TO PLAY
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12 60-Second TimerA one-minute time
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210 IF A$=•• THEN GOTO 200220 I
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convert those raw numbers to a batt
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The program here has a temporary su
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1 Create a QuizOne of the most fasc
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line 10 for a.word. It is looking f
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program if you. don't get it right
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90 PRINT100 PRINT "ADDRESS";TAB lO;
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160 LET D$(7)=•sEE YOUR ANALYST"1
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32 Sentence WriterPractice your Eng
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160 IF GH THEN LET H=G180 GOTO 2020
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30 PRINT A$;40 GOTO 1036 Question &
Page 55: Gee Whiz
Page 58 and 59: 38 Gee Whiz II:Three-Digit MysteryH
Page 60 and 61: 41 Gee Whiz V: SecondAlphabet Spott
Page 63: Number Crunching
Page 66 and 67: 120 LET R::R+l125 LET W=j130 LET Z=
Page 68 and 69: 10 the computer asks for a number.
Page 70 and 71: Program Listing10 PRINT •WHAT IS
Page 72 and 73: 25 INPUT Z30 IF Z=I THEN GOTO 8035
Page 74 and 75: 70 GOTO 2080 CLS90 PRINT "THE SMALL
Page 76 and 77: 60 CLS70 PRINT "THE FRACTIONAL PORT
Page 78 and 79: 30 INPUT N35 IF N>INT N THEN GOTO 5
Page 80 and 81: Line 20 generates the numbers. Line
Page 82 and 83: Random Numbers:Distr~butionEver won
Page 84 and 85: 110 PRINT "RANDOM NUMBERS TOTAL ";T
Page 87 and 88: Money Matters
Page 89 and 90: Shopper's FriendTake your computer
Page 91 and 92: POST IS BEST BUYPOST UNIT=$0.08KELL
Page 93 and 94: ending in 95 cents. For instance, a
Page 95 and 96: 100 LET D=l-0.0l*P110 LET R=W/D120
Page 97 and 98: 100 IF H>40 THEN GOTO 140110 LET W=
Page 99 and 100: Unit price is total price divided b
Page 101: The computer generates a table of r
Page 105: 80 Screen FullFill your video scree
Page 109 and 110: Program Listing10 CLS100 FOR L=g TO
Page 111 and 112: There are a number of ways to get t
Page 113 and 114: 140 NEXT X200 LET X=INT(63*RND}210
Page 115 and 116: Program Listing10 LET A$=• 1120 F
Page 117 and 118: 100 FOR Y=l5 TO 25 STEP 10110 FOR X
Page 119: 101 Random Bar GraphIf you don't ha
Page 123 and 124: Appendix A:Sinclair BASIC WordsHere
Page 125: StatementsCLEARCLSCONTCOPYDIMDIM $F
Page 129 and 130: ooks from ARCsoft PublishersFor the
Page 132: 101 TIMEX 1000/Sinclair ZX-81Progra
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